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emacs/m4/readlinkat.m4

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# serial 3
# See if we need to provide readlinkat replacement.
dnl Copyright (C) 2009-2014 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
# Written by Eric Blake.
AC_DEFUN([gl_FUNC_READLINKAT],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_CHECK_FUNCS_ONCE([readlinkat])
if test $ac_cv_func_readlinkat = no; then
HAVE_READLINKAT=0
fi
])